Battery-jar



' n, 1914, 1,344,7'7 1 Patented June 29, 1920.

2 SHEETS-SHEET l.

'J. C. PEABODYL BATTERY JAR.

N FIL APP .11, 1914. 1,344,771. Patented June 29, 1920.

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0 f WWW I Aflys- UNITED STATES PATENT OFFICE.

JAMES C. PEABOIPY, OF BOSTON, MASSACHUSETTS.

BATTERY-JAR.

Application filed November 11, 1914. Serial No. 871.627.

To all whom it may concern:

Be "it known that 1, JAMES C. PEABODY, citizen of the United States,residing at Boston, county of Suffolk, State of Massachusetts, haveinvented a certain new and useful Improvement in Battery-Jars, of whichthe following is a specification, reference being bad therein to theaccompanying drawings.

My invention relates to a new and vimproved container especially adaptedfor use as a battery jar and also the novel process of making As is wellknown to those skilled in this art, battery jars must be made ofinsulating material capable of resisting acid, should be light inweight, strong, not likely to fracture, soften or become distorted, andit i desirable that they should be inexpensive, and should occupy theleast possible space consistent with the necessary strength. The batteryjar embodying my present invention combines all of the advantages namedabove.

\Vhile I have described my invention in the subsequent description asembodied in a battery jar, it isobvious that the container may beemployed for any one of a variety of uses where the qualities named ormost of them, are important.

My improved battery jar is made from a thin sheet of metal referred toherein as the metal backing, to which is applied, on both sidespreferably, a facing of absorbent fibrous material, as for instance,paper. This absorbent material is treated and preferably permeated by anacid-resisting substance, as for instance, China-wood oil, or the like,or a mixture of oil and rosin which is subsequently hardened. Thecontainer is preferably made by folding together the margins of thesheet of metal after the fac-' ing has been applied thereto in such amanner that the folded margins are on the outside of the container andtherefore are thoroughly protected from the acid or other contents ofthe container. The material described forms a tough, insulating, acidresisting protective layer upon the metal backing which prevents theacid or other contents from coming in contact with the metal. Thisprotective coating is of such a nature that it doe not fracture orbecome impaired by the use to which the jar is subjected.

My invention also includes the novel process herein described of makingthe said from the following description when taken A in connection withthe accompanying drawings and the novel features thereof will be clearlypointed out anddefined in the claims at the close of this specification.

Referring to the drawings, Figure 1 is a view in perspective of thefinished battery jar embodying my invention.

Fig. 2 is a view of the sheet of material to which the facing has beenapplied.

Fig. 3 is a view in perspective of the battery jar before the outsideprotective layer has been applied.

Fig. 4 shows a piece forming the bottom and sides.

- Fig. 5 shows one end, and

Fig. 6 the other end.

Fig. 7 is a horizontal section on line 77 of Fig. 1, looking downward.

Fig. 8 is a vertical section on line 88 of Fig. 1 looking in thedirection of the arrows.

Fig. 9 is an enlarged cross-section showing the layers of material andthe construction of the joint.

In manufacturing my improved container, I prefer to proceed as follows,Asheet 11 of thin metal as for instance sheet iron or tin piece, see Fig.4, while the ends 16an-d 17 are formed separately as shown in Figs. 5and 6. Notches e are cut from the sides and ends near the to to permitthe edges to be folded together. he parts are then assembled and securedto each other by folding to ether the adjacent edges as will be seen inigs. 7, 8,

and 9, and so that the facing 12 is on the inside of the container. Thisis conveniently done by giving the edges a and b of the ends a U-shapedfold as seen in' Fig. 9 while the edge 0 of the sides is insertedbetween the legs of the U formed as described and then folded around itas shown clearly in Fig. 9.

vThis results in looking together firmly the proximate parts of thecontainer without the use of solder or rivets. It will be seen that theentire interior of the container is fully covered by the facing whichforms a lining. It will also be seen that, the margin of the sheet metalbacking of one member is folded into the U-shaped portion of the othermember so that it is perfectly protected from attack by the acid. Itwill further be seen that the seam thus formed lies on the exterior ofthe container and is therefore at a distance from the acid which doesnot penetrate beyond the point g for reasons which Will be laterexplained. The hollows on the outer sides of the ends caused by theseams are then preferably filled by strips of paper 20 of the requiredthickness, and a thin layer 21 of the absorbent fibrous material ispasted over the entire exterior of the container. Thin paper isconveniently used for this purpose.

The container having been made up in the form described, the facingmaterial is treated with some substance which is acid resisting or whichrenders the facing acid resisting and is preferably treated in such amanner as to cause the said substance to permeate completely the facingmaterial. The acid resisting substance thus employed may be any one of avariety of well known acid resisting substances and may be applied inliquid form with or without rosin, or suitable resins or gums in asolvent. The preferred acid resisting substance is China-wood oil;liinseed oil and rosin is suitable, as well as many other similarmaterials. To force the acid resisting substance into the pores of thefacing and to insure the most complete permeation, the vacuum andpressure process well known to those skilled in this art may beemployed. It is desirable to force into the absorbent facing as large anamount of the acid resisting substance as possible in order that theremay be a slight excess thereof. The acid resisting material is thenhardened by drying or baking, according to the nature of the materialemployed as the acid resisting substance. \Vhere baking is resorted toin drying and hardening the acid resisting material, it will be foundthat during the baking the slight excess of the acid resist so that animpenetrable barrier to the acid is formed at the seams. This result mayalso be obtained by flowing a little of the acid resisting material intothe joints before the hardening takes place.

At 22 and 23 are shown two bridges made of any suitable material as forinstance, wood properly protected as by impregnation, compressed fiber,hard rubber or the like.

In the foregoing description, I have referred to the backing as beingcomposed of sheet metal, but it is obvious that it is only necessary tohave a thin layer of metal beneath the protective coating of fibrousmaterial and acid resisting compound regardless of whether this metallayer is produced by rolling, casting, drawing or spin ning.

Obvious variations in carrying out my invention may be employed, as forinstance, employing a paper which has been rendered acid resistingbefore it is secured to the sheet metal backing, or applying the acidresisting material to the sheet metal backing and then applyingtheabsorbent fibrous facing thereto.

The facing as thus treated and applied is flexible and tough and adhereswith great tenacity to the metal backing. The. backing may be readilybent or subjected to hard usage without flaking off of the facing orotherwise injuring it. This container or battery jar constructed asdescribed herein is very light, being hardly heavier than a, tin box ofthe same size, is somewhat elastic, does not fracture or crack andpermit the acid to attack the sheet metal backing, may be manufacturedfor a fraction of the cost of a hard rubber battery jar, resists acidequally well and has proved in actual use to be entirely durable.

Vhat I claim is:

1. A container suitable for a battery jar having a bottom and fourvertical sides. K

the bottom and two sides being formed of a single blank and each of thetwo other sides being formed of a single blank, each blank consisting ofa sheet metal backing having the entire inner face covered by a sheet ofabsorbent fibrous material adhesively secured thereto, the adjacentmarginal portions of the contiguous blanks being united together byfolding together the said marginal portions in such manner that all ofthe said folds are on the exterior of the finished container, themarginal portions of the absorbent facings as well as of the backingsbeing inclosed in the folds, said" absorbent facings being permeatedwith an acid resisting substance.

2.,A container suitable for a battery jar having a bottom and fourvertical sides, the bottom and two sides being formed of a single blankand each of the two other sides being formed of a single blank, eachblank absorbent fibrous material adhesively secured thereto, theadjacent mar inal ortions of the contiguous blanks be1ng unlted togetherby folding together the said marginal portions in such manner that allof the said folds are onthe exterior of the finished containenthe marinal portions of s1st1ng substance, the

the absorbent facings as we 1 as of the back ings being inclosed in thefolds, the said absorbent facings being permeated 'Wlth an acidresisting substance, a layer of'absorb ent material ;-in each of thehollows on the absorbent fibrous material,

outerrsides between the-folds, and a cover ing of fibrous materialadhesively secured to the entire outside of the container.

3. A container suitable for a battery jar having a bottom and fourvertical sides formed of a plurality of sheets, each of which hasavmetallic backing and a facing of the adjacent marginal portions of thecontiguous sheets being united together by folding together the saidmarginal portions in that the marginal portions of the absorbentfacings, as well as of the backing, are inclosed in the folds, saidabsorbent facin being permeated with anacid resisting su stance, and thecrevices between the adjacent edges of the walls of the container on theinner side formed by said folded marginal portions being closed by saidacid resisting substance in excess of that which permeates the facing.

4. A container suitable for a batteryv jar which consists of a sheetmetal backing having thereon an inner facing of an absorbent materialpermeated by an acid resisting substance, the sides and the bottom beingformed of a single sheet and each of the two ends being formed sides andends being secured'together by folding together the adjacent margins ofsaid parts, the said facing of absorbent material covering the entireinner exposed face of the finished container, and also extending overthe face of the in-folded portions the metallic backings of adjacentfaces being separated from each other by the interposed facing ofabsorbent material permeated by the'acid resisting substance. o

5. A container suitable for a battery jar, which consists of a sheetmetal backing having thereon an inner facing of an absorbent materialpermeated by an acid resisting substance, the sides and ends beingsecured together by folding together the adjacent margins of said partswith the folds on the outside of the finished container, said facing ofabsorbent material extending over the inner surface of the finishedcontainer and over the inner faces of the folded portions, the hollowson the outer sides of the ends caused by the folds being filled withfibrous such manner of a single sheet, the

Y stance, and hardening-the material and the metallic backings of adjacent faces being separatedfronfeach other by the interposed facing ofabsorbent material permeated by the acid resisting substance.

6. A container suitable for a battery jar which iconsists of a sheetmetal backing having thereon an innerfacing of an absorbent materialpermeated by an acid resides and endsbein secured together by foldingtogether the adjacent margins of saidwparts with the folds on theoutside of the finished container, said facing of absorbent materialextending over the'inner surface of the finished container and over theinner faces of the folded portions, and a layer ofabsorbent materialpermeated with acid resisting substance pasted over the entire exteriorof .the container the metallic backings of adj acent faces beingseparated from each other by the interposed facing of absorbent materialpermeated by the acid resisting substance.

7. The process of making a container suitable for a battery jar whichconsists in securing to sheet metal a facing of unpermeated absorbentmaterial, formin the container from said combined materia permeating theabsorbent facing with an acid resisting substance, and hardening saidacid resisting substance;

8. The process of making a container suitable fora'battery jar whichconsists in securing to sheet metal by means of an adhesive a facing ofunpermeated absorbent material, cutting therefrom the parts of thecontainer, assembling them, permeating the absorbent facing with an acidresisting substance, and hardening the acid resisting substance.

9. The process of makin a container suitable for a battery jar whichconsists in securing to sheet metal by means of an adhesive a facing ofunpermeated absorbent material, cutting therefrom the parts of thecontainer, assemblin the same by folding adjacent edges together,permeating the absorbent material with an acid resisting subacidresisting substance.

suitable for a battery jar which consists in forming blank parts for thecontainer out of sheet material having a facing of absorbent materialadhesively secured thereto, shaping one of said blank parts to form thebottom and two vertical sides of the finished container and assembling,the same with two other blank sheets which form two other vertical sidesof the container, by uniting manner that the folds all project out- 10.The process of making a container Wardly, and treating the absorbentmaterial with an acid resisting substance which permeates said absorbentmaterial.

11. A container suitable for a battery jar which consists of a sheetmetal backing having thereon an inner facing of an absorbent materialpermeated by an acid resisting substance, the sides and ends beingsecured together by folding together the adjacent 10 margins of saidparts 1n such manner that In testimony whereof I afiix my signature, 16

in presence of two witnesses.

JAMES C. PEABODY. Witnesses:

GEORGE P. DIKE, ALICE H. MORRISON.

